SN74HC594DR

Shift Registers Overview

The SN74HC594DR is an 8-bit serial-in, parallel-out shift register with an output storage register. It operates within a supply voltage range of 2 V to 6 V and supports a maximum clock frequency of 24 MHz at 6 V. The device features high-current push-pull outputs capable of driving up to 15 LSTTL loads. It includes independent direct overriding clear inputs for both the shift and storage registers, as well as separate positive edge-triggered clocks for each stage.

Shift Registers Feature Summary

• Provides an 8-bit serial-to-parallel conversion path feeding into a D-type storage register.
• Features high-current outputs designed to drive medium loads without significant voltage drops.
• Includes independent direct overriding clear inputs for both the shift and storage registers.
• Supports cascading operations through a dedicated serial output pin.

Shift Registers Applications

• Pro Audio Mixer systems
• Elevators and Escalators control interfaces
• Human Machine Interface (HMI) in industrial monitoring
• Entertainment Systems signal processing
• Grid Infrastructure Grid Control applications

Shift Registers Procurement Notes

Verify the specific package variant against the datasheet addendum, as the 'DR' suffix denotes a SOIC package with a 2500-unit reel quantity. Confirm RoHS compliance status and lead finish specifications via the manufacturer's current documentation. Ensure the operating temperature range requirements align with the -40°C to 125°C rating specified for this part number.

Shift Registers Selection Notes

Select this component when a CMOS logic family with wide voltage tolerance is required for serial data expansion. The independent clocking mechanism allows precise timing control between shifting data and latching outputs. Consider the high-current output capability if interfacing directly with multiple TTL loads or moderate capacitive buses without additional buffering.

Shift Registers Part Context

This device belongs to the SNx4HC594 family of 8-bit shift registers manufactured by Texas Instruments. It utilizes standard CMOS technology to provide balanced output drive characteristics. The series is designed for general-purpose digital logic applications requiring reliable serial-to-parallel data conversion with robust noise immunity and low power consumption profiles.

Shift Registers Replacement Considerations

SN74HC594DWR is a compatible alternative offering identical functionality in a wider SOIC package format.